As the previous responder said, COUNTIF may be just what you need.
Alternatively, if you use Autofilter, the SUBTOTAL function is great
when filtering.

To get the count from a subtotal you use: =SUBTOTAL(2,C2:C10000)
(The 2 makes it use count)

Subtotal will only count the displayed data, so that when the filter
is applied it only counts the data that is not hidden (eg selecting ID
123456 would then list and count only the classes that were taken by
Joe A) - this is more of a true database function at this point and
mimics the use of a view.

On Jan 21, 3:08*pm, lilhoot wrote:
For example, if I work at a testing center and I want to know how many
students I tested on a that day, how would I count the date if my data is
laid out like this:
* * * * * A * * * * * * * * * * * * * B * * * * * * * * * * * *C
1 * StudentName * * * * * * *ID * * * * * * * *Date Tested
2 * * * Joe A * * * * * * * * * 123456 * * * * * * 9/5/2006
3 * * * Joe B * * * * * * * * * *987654 * * * * * *10/8/2006
4 * * * Joe C * * * * * * * * * 123789 * * * * * * 10/20/2006
5 * * * Joe D * * * * * * * * * 456123 * * * * * * 10/20/2006
6 * * * Joe E * * * * * * * * * 789123 * * * * * * 11/15/2006
7 * * * Joe F * * * * * * * * * 456789 * * * * * * 12/5/2006
8 * * * Joe G * * * * * * * * * 159753 * * * * * * 12/5/2006
9 * * * Joe H * * * * * * * * * 951753 * * * * * * 12/5/2006

Thank you in advance for your help!

Tommy